RE: broadhead question...
If the arrows are tuned to the bow, and the broadheads tuned to the arrows, they will cut the same hole. However I keep my arrows numberd, I sight my bow in with the number 1 arrow, resharpen it, and use it till it is lost or destroyed, then repeat the process with number 2 and so on. I have never had to move the sight when moving on to the next arrow, but still like to check it.